written, produced and directed by William Cran ; a Frontline coproduction with InVision Productions, Ltd. in association with BBC-2 ; WGBH Educational Foundation
directed b Michael Kirk ; written by Michael Kirk and Mike Wiser ; produced by Michael Kirk, Jim Gilmore, Mike Wiser ; a Frontline production with the Kirk Documentary Group ; WGBH
a Frontline production with Kirk Documentary Group ; produced by Michael Kirk, Jim Gilmore, Mike Wiser ; written by Michael Kirk & Mike Wiser ; directed by Michael Kirk
Produced & directed by Jon Palfreman and Barbara Moran ; written by Jon Palfreman ; a Frontline coproduction with the Palfreman Film Group, Inc. ; WGBH Educational Foundation